HiRes files ASIO from Qobuz and PC/ WASAPI/ Foobar- Math Audio EQ. USB cables: Supra Excalibur, Viborg's best and $20 version, Ebay $20 (quite good), Hosa and StarTech. Or Douk Audio USB to SPDIF convertor via DIY Belden Cat6e cable. DACS: VMV D2R, Burson Conductor Performance SE with Sparkos Pro op amps, Conductor 3XP with Sparkos 3602, Aune X8 XVIII w/ Sparkos Pro amps or IFI Zendac V2. Analog cables: DIY Nordost audio cables XLR and RCA, box full of DIY and high end cables from Ebay and AudioQuest ect. Amps: VMV P2, Burson Conductor Reference SE, Conductor 3XP, Aune S17, Topping A90D. Headphone cables: Ebay 16 cores pure Silver, Silver plated, Youkamoo $30 (quite good), stock HiFiMan headphone cables. Headphones: Ananda HE1000SE, Nano, SennHeiser 565.